```python
#import pandas as pd
import matplotlib.pypblot
```
```python
import numpy as np
from matplotlib import pyplot as plt #plt为变量名
x = np.arange(1,120)
y = 2 * x* x + 5
plt.title("Matplotlib demo") #定义图表标题
plt.xlabel("x axis caption") #横轴标签
plt.ylabel("y axis caption") # 纵轴标签
plt.plot(x,y)
#plt.plot(y,x) #反函数的绘制
plt.show()
```
![png](output_1_0.png)
```python
a=sorted([f.name for f in matplotlib.font_manager.fontManager.ttflist])
for i in a:
print(i)
#打印支持的字体列表
```
AR BERKLEY
AR BERKLEY
AR BLANCA
AR BLANCA
AR BONNIE
AR BONNIE
AR CARTER
AR CARTER
AR CENA
AR CENA
AR CHRISTY
AR CHRISTY
AR DARLING
AR DARLING
AR DECODE
AR DECODE
AR DELANEY
AR DELANEY
AR DESTINE
AR DESTINE
AR ESSENCE
AR ESSENCE
AR HERMANN
AR HERMANN
AR JULIAN
AR JULIAN
Aharoni
Aldhabi
Algerian
Algerian
Andalus
Angsana New
Angsana New
Angsana New
Angsana New
AngsanaUPC
AngsanaUPC
AngsanaUPC
AngsanaUPC
Aparajita
Aparajita
Aparajita
Aparajita
Arabic Typesetting
Arial
Arial
Arial
Arial
Arial
Arial
Arial
Arial
Arial
Arial
Arial
Arial
Arial
Baskerville Old Face
Baskerville Old Face
Bauhaus 93
Bauhaus 93
Bell MT
Bell MT
Bell MT
Bell MT
Bell MT
Bell MT
Berlin Sans FB
Berlin Sans FB
Berlin Sans FB
Berlin Sans FB
Berlin Sans FB Demi
Berlin Sans FB Demi
Bernard MT Condensed
Bernard MT Condensed
Bodoni MT
Bodoni MT
Book Antiqua
Book Antiqua
Book Antiqua
Book Antiqua
Book Antiqua
Book Antiqua
Book Antiqua
Book Antiqua
Bookman Old Style
Bookman Old Style
Bookman Old Style
Bookman Old Style
Bookman Old Style
Bookman Old Style
Bookman Old Style
Bookman Old Style
Bookshelf Symbol 7
Bookshelf Symbol 7
Britannic Bold
Britannic Bold
Broadway
Broadway
Browallia New
Browallia New
Browallia New
Browallia New
BrowalliaUPC
BrowalliaUPC
BrowalliaUPC
BrowalliaUPC
Brush Script MT
Brush Script MT
Calibri
Calibri
Calibri
Calibri
Calibri
Calibri
Californian FB
Californian FB
Californian FB
Californian FB
Californian FB
Californian FB
Cambria
Cambria
Cambria
Candara
Candara
Candara
Candara
Candara
Candara
Candara
Candara
Centaur
Centaur
Century
Century
Century Gothic
Century Gothic
Century Gothic
Century Gothic
Century Gothic
Century Gothic
Century Gothic
Century Gothic
Chiller
Chiller
Colonna MT
Colonna MT
Comic Sans MS
Comic Sans MS
Comic Sans MS
Comic Sans MS
Consolas
Consolas
Consolas
Consolas
Constantia
Constantia
Constantia
Constantia
Cooper Black
Cooper Black
Corbel
Corbel
Corbel
Corbel
Cordia New
Cordia New
Cordia New
Cordia New
CordiaUPC
CordiaUPC
CordiaUPC
CordiaUPC
Courier New
Courier New
Courier New
Courier New
DFKai-SB
DaunPenh
David
David
DejaVu Sans
DejaVu Sans
DejaVu Sans
DejaVu Sans
DejaVu Sans Display
DejaVu Sans Mono
DejaVu Sans Mono
DejaVu Sans Mono
DejaVu Sans Mono
DejaVu Serif
DejaVu Serif
DejaVu Serif
DejaVu Serif
DejaVu Serif Display
DengXian
DengXian
DengXian
DengXian
DengXian
DengXian
DilleniaUPC
DilleniaUPC
DilleniaUPC
DilleniaUPC
DokChampa
Ebrima
Ebrima
Estrangelo Edessa
EucrosiaUPC
EucrosiaUPC
EucrosiaUPC
EucrosiaUPC
Euphemia
FZShuTi
FZShuTi
FZYaoTi
FZYaoTi
FangSong
Footlight MT Light
Footlight MT Light
FrankRuehl
Franklin Gothic Medium
Franklin Gothic Medium
FreesiaUPC
FreesiaUPC
FreesiaUPC
FreesiaUPC
Freestyle Script
Freestyle Script
Gabriola
Gabriola
Gadugi
Gadugi
Garamond
Garamond
Garamond
Garamond
Garamond
Garamond
Gautami
Gautami
Georgia
Georgia
Georgia
Georgia
Gisha
Gisha
Harlow Solid Italic
Harlow Solid Italic
Harrington
Harrington
High Tower Text
High Tower Text
High Tower Text
High Tower Text
Impact
Informal Roman
Informal Roman
IrisUPC
IrisUPC
IrisUPC
IrisUPC
Iskoola Pota
Iskoola Pota
JasmineUPC
JasmineUPC
JasmineUPC
JasmineUPC
Javanese Text
Jokerman
Jokerman
Juice ITC
Juice ITC
KaiTi
Kalinga
Kalinga
Kartika
Kartika
Khmer UI
Khmer UI
Khmer UI
Khmer UI
KodchiangUPC
KodchiangUPC
KodchiangUPC
KodchiangUPC
Kokila
Kokila
Kokila
Kokila
Kristen ITC
Kristen ITC
Kunstler Script
Kunstler Script
Lao UI
Lao UI
Lao UI
Lao UI
Latha
Latha
Leelawadee
Leelawadee
Leelawadee UI
Leelawadee UI
Leelawadee UI
Leelawadee UI
Leelawadee UI
Leelawadee UI
Levenim MT
Levenim MT
LiSu
LiSu
LilyUPC
LilyUPC
LilyUPC
LilyUPC
Lucida Bright
Lucida Bright
Lucida Bright
Lucida Bright
Lucida Bright
Lucida Bright
Lucida Bright
Lucida Bright
Lucida Calligraphy
Lucida Calligraphy
Lucida Console
Lucida Fax
Lucida Fax
Lucida Fax
Lucida Fax
Lucida Fax
Lucida Fax
Lucida Fax
Lucida Fax
Lucida Handwriting
Lucida Handwriting
Lucida Sans Unicode
MS Reference Sans Serif
MS Reference Sans Serif
MS Reference Specialty
MS Reference Specialty
MT Extra
MV Boli
Magneto
Magneto
Malgun Gothic
Malgun Gothic
Mangal
Mangal
Marlett
Matura MT Script Capitals
Matura MT Script Capitals
Microsoft Himalaya
Microsoft New Tai Lue
Microsoft New Tai Lue
Microsoft PhagsPa
Microsoft PhagsPa
Microsoft Sans Serif
Microsoft Tai Le
Microsoft Tai Le
Microsoft Uighur
Microsoft Uighur
Microsoft Yi Baiti
Miriam
Miriam Fixed
Mistral
Mistral
Modern No. 20
Modern No. 20
Mongolian Baiti
Monotype Corsiva
Monotype Corsiva
MoolBoran
Myanmar Text
Myanmar Text
Narkisim
Niagara Engraved
Niagara Engraved
Niagara Solid
Niagara Solid
Nirmala UI
Nirmala UI
Nirmala UI
Nirmala UI
Nirmala UI
Nirmala UI
Nyala
Old English Text MT
Old English Text MT
Onyx
Onyx
Palatino Linotype
Palatino Linotype
Palatino Linotype
Palatino Linotype
Parchment
Parchment
Plantagenet Cherokee
Playbill
Playbill
Poor Richard
Poor Richard
Raavi
Raavi
Ravie
Ravie
Rod
STCaiyun
STCaiyun
STFangsong
STFangsong
STHupo
STHupo
STIXGeneral
STIXGeneral
STIXGeneral
STIXGeneral
STIXNonUnicode
STIXNonUnicode
STIXNonUnicode
STIXNonUnicode
STIXSizeFiveSym
STIXSizeFourSym
STIXSizeFourSym
STIXSizeOneSym
STIXSizeOneSym
STIXSizeThreeSym
STIXSizeThreeSym
STIXSizeTwoSym
STIXSizeTwoSym
STKaiti
STKaiti
STLiti
STLiti
STSong
STSong
STXihei
STXihei
STXingkai
STXingkai
STXinwei
STXinwei
STZhongsong
STZhongsong
Sakkal Majalla
Sakkal Majalla
Segoe Print
Segoe Print
Segoe Script
Segoe Script
Segoe UI
Segoe UI
Segoe UI
Segoe UI
Segoe UI
Segoe UI
Segoe UI
Segoe UI
Segoe UI
Segoe UI
Segoe UI
Segoe UI
Segoe UI Emoji
Segoe UI Symbol
Shonar Bangla
Shonar Bangla
Shonar Bangla
Shonar Bangla
Showcard Gothic
Showcard Gothic
Shruti
Shruti
SimHei
SimSun-ExtB
Simplified Arabic
Simplified Arabic
Simplified Arabic Fixed
Snap ITC
Snap ITC
Stencil
Stencil
Sylfaen
Symbol
Tahoma
Tahoma
TeamViewer15
Tempus Sans ITC
Tempus Sans ITC
Times New Roman
Times New Roman
Times New Roman
Times New Roman
Traditional Arabic
Traditional Arabic
Trebuchet MS
Trebuchet MS
Trebuchet MS
Trebuchet MS
Tunga
Tunga
Urdu Typesetting
Urdu Typesetting
Urdu Typesetting
Urdu Typesetting
Utsaah
Utsaah
Utsaah
Utsaah
Vani
Vani
Vani
Vani
Verdana
Verdana
Verdana
Verdana
Vijaya
Vijaya
Viner Hand ITC
Viner Hand ITC
Vivaldi
Vivaldi
Vladimir Script
Vladimir Script
Vrinda
Vrinda
Webdings
Wide Latin
Wide Latin
Wingdings
Wingdings 2
Wingdings 2
Wingdings 3
Wingdings 3
YouYuan
YouYuan
Yu Gothic
Yu Gothic
Yu Gothic
Yu Mincho
Yu Mincho
Yu Mincho
cmb10
cmex10
cmmi10
cmr10
cmss10
cmsy10
cmtt10
Matplotlib 默认情况不支持中文
我们可以使用系统的字体:
```python
import numpy as np
from matplotlib import pyplot as plt
import matplotlib
# fname 为 你下载的字体库路径,注意 SimHei.ttf 字体的路径
zhfont1 = matplotlib.font_manager.FontProperties(fname="C:\Windows\Fonts\msyh.ttc") #微软雅黑
x = np.arange(1,11)
y = 2 * x + 5
plt.title("菜鸟教程 - 测试", fontproperties=zhfont1)
# fontproperties 设置中文显示,fontsize 设置字体大小
plt.xlabel("x 轴", fontproperties=zhfont1,)
plt.ylabel("y 轴", fontproperties=zhfont1)
plt.plot(x,y)
plt.show()
```
![png](output_4_0.png)
中文字体测试
```python
import numpy as np
from matplotlib import pyplot as plt
plt.rcParams['font.family']=['Arial'] #字体使用Arial字体
x = np.arange(1,11)
y = 2 * x + 5
plt.title("Matplotlib demo")
plt.xlabel("x axis caption")
plt.ylabel("y axis caption")
plt.plot(x,y,"ob") #散点图 属性 为ob
plt.show()
```
![png](output_6_0.png)
散点图测试
使用系统字体
```python
import numpy as np
import matplotlib.pyplot as plt
# 计算正弦曲线上点的 x 和 y 坐标
x = np.arange(0, 3 * np.pi, 0.1)
y = np.sin(x)
plt.title("sine wave form")
# 使用 matplotlib 来绘制点
plt.plot(x, y)
plt.show()
```
![png](output_8_0.png)
绘制正弦波
```python
import numpy as np
import matplotlib.pyplot as plt
# 计算正弦和余弦曲线上的点的 x 和 y 坐标
x = np.arange(0, 3 * np.pi, 0.1)
y_sin = np.sin(x)
y_cos = np.cos(x)
# 建立 subplot 网格,高为 2,宽为 1
# 激活第一个 subplot
plt.subplot(2, 1, 1)
# 绘制第一个图像
plt.plot(x, y_sin)
plt.title('Sine')
# 将第二个 subplot 激活,并绘制第二个图像
plt.subplot(2, 1, 2)
plt.plot(x, y_cos)
plt.title('Cosine')
# 展示图像
plt.show()
```
![png](output_10_0.png)
绘制两个图形
```python
from matplotlib import pyplot as plt
x = [5,8,10]
y = [12,16,6]
x2 = [6,9,11]
y2 = [6,15,7]
plt.bar(x, y, align = 'center')
plt.bar(x2, y2, color = 'g', align = 'center')
plt.title('Bar graph')
plt.ylabel('Y axis')
plt.xlabel('X axis')
plt.show()
```
![png](output_12_0.png)
绘制条形图
```python
import numpy as np
a = np.array([22,87,5,43,56,73,55,54,11,20,51,5,79,31,27])
np.histogram(a,bins = [0,20,40,60,80,100])
hist,bins = np.histogram(a,bins = [0,20,40,60,80,100])
print (hist)
print (bins)
```
[3 4 5 2 1]
[ 0 20 40 60 80 100]
#### numpy.histogram()
numpy.histogram() 函数是数据的频率分布的图形表示。 水平尺寸相等的矩形对应于类间隔,称为 bin,变量 height 对应于频率。
numpy.histogram()函数将输入数组和 bin 作为两个参数。 bin 数组中的连续元素用作每个 bin 的边界。
```python
from matplotlib import pyplot as plt
import numpy as np
a = np.array([22,87,5,43,56,73,55,54,11,20,51,5,79,31,27])
plt.hist(a, bins = [0,20,40,60,80,100])
plt.title("histogram")
plt.show()
```
![png](output_16_0.png)
#### plt()
Matplotlib 可以将直方图的数字表示转换为图形。
pyplot 子模块的 plt() 函数将包含数据和 bin 数组的数组作为参数,并转换为直方图。
### 测试matplotlib & numpy 库
np.arange() 函数创建 x 轴上的值。y 轴上的对应值存储在另一个数组对象 y 中。
这些值使用 matplotlib 软件包的 pyplot 子模块的 plot() 函数绘制。
图形由 show() 函数显示。
```python
import pandas as pd
dataset = pd.read_csv('pythontest.csv')
dataset.head(10)
```
<div>
<style scoped>
.dataframe tbody tr th:only-of-type {
vertical-align: middle;
}
.dataframe tbody tr th {
vertical-align: top;
}
.dataframe thead th {
text-align: right;
}
</style>
<table border="1" class="dataframe">
<thead>
<tr style="text-align: right;">
<th></th>
<th>LotID</th>
<th>GlassID</th>
<th>AreaNo</th>
<th>AreaX</th>
<th>AreaY</th>
<th>Iter</th>
<th>RMSESet</th>
<th>RMSEFin</th>
<th>L1T</th>
<th>L1N</th>
<th>L1K</th>
<th>L2T</th>
<th>L2N</th>
<th>L2K</th>
<th>Recipe</th>
<th>Date</th>
<th>Time</th>
</tr>
</thead>
<tbody>
<tr>
<th>0</th>
<td>5CCBDX0197M</td>
<td>5ACCD90004A6</td>
<td>1</td>
<td>1140</td>
<td>954</td>
<td>20</td>
<td>0.5</td>
<td>0.956429</td>
<td>550.0</td>
<td>1.8723</td>
<td>0.0224</td>
<td>1010.52</td>
<td>1.704</td>
<td>0.0046</td>
<td>RC_6514_10.2_PI_126P</td>
<td>2019/06/15</td>
<td>14:29:59</td>
</tr>
<tr>
<th>1</th>
<td>5CCBDX0197M</td>
<td>5ACCD90004A6</td>
<td>2</td>
<td>960</td>
<td>954</td>
<td>20</td>
<td>0.5</td>
<td>0.845970</td>
<td>550.0</td>
<td>1.8723</td>
<td>0.0224</td>
<td>1008.73</td>
<td>1.704</td>
<td>0.0046</td>
<td>RC_6514_10.2_PI_126P</td>
<td>2019/06/15</td>
<td>14:30:04</td>
</tr>
<tr>
<th>2</th>
<td>5CCBDX0197M</td>
<td>5ACCD90004A6</td>
<td>3</td>
<td>790</td>
<td>954</td>
<td>20</td>
<td>0.5</td>
<td>1.082690</td>
<td>550.0</td>
<td>1.8723</td>
<td>0.0224</td>
<td>1044.63</td>
<td>1.704</td>
<td>0.0046</td>
<td>RC_6514_10.2_PI_126P</td>
<td>2019/06/15</td>
<td>14:30:09</td>
</tr>
<tr>
<th>3</th>
<td>5CCBDX0197M</td>
<td>5ACCD90004A6</td>
<td>4</td>
<td>620</td>
<td>954</td>
<td>20</td>
<td>0.5</td>
<td>0.991395</td>
<td>550.0</td>
<td>1.8723</td>
<td>0.0224</td>
<td>1069.88</td>
<td>1.704</td>
<td>0.0046</td>
<td>RC_6514_10.2_PI_126P</td>
<td>2019/06/15</td>
<td>14:30:14</td>
</tr>
<tr>
<th>4</th>
<td>5CCBDX0197M</td>
<td>5ACCD90004A6</td>
<td>5</td>
<td>430</td>
<td>954</td>
<td>20</td>
<td>0.5</td>
<td>0.767140</td>
<td>550.0</td>
<td>1.8723</td>
<td>0.0224</td>
<td>1049.54</td>
<td>1.704</td>
<td>0.0046</td>
<td>RC_6514_10.2_PI_126P</td>
<td>2019/06/15</td>
<td>14:30:19</td>
</tr>
<tr>
<th>5</th>
<td>5CCBDX0197M</td>
<td>5ACCD90004A6</td>
<td>6</td>
<td>260</td>
<td>954</td>
<td>20</td>
<td>0.5</td>
<td>0.798345</td>
<td>550.0</td>
<td>1.8723</td>
<td>0.0224</td>
<td>1042.95</td>
<td>1.704</td>
<td>0.0046</td>
<td>RC_6514_10.2_PI_126P</td>
<td>2019/06/15</td>
<td>14:30:24</td>
</tr>
<tr>
<th>6</th>
<td>5CCBDX0197M</td>
<td>5ACCD90004A6</td>
<td>7</td>
<td>90</td>
<td>954</td>
<td>20</td>
<td>0.5</td>
<td>1.001940</td>
<td>550.0</td>
<td>1.8723</td>
<td>0.0224</td>
<td>1081.89</td>
<td>1.704</td>
<td>0.0046</td>
<td>RC_6514_10.2_PI_126P</td>
<td>2019/06/15</td>
<td>14:30:30</td>
</tr>
<tr>
<th>7</th>
<td>5CCBDX0197M</td>
<td>5ACCD90004A6</td>
<td>8</td>
<td>-90</td>
<td>954</td>
<td>20</td>
<td>0.5</td>
<td>0.985975</td>
<td>550.0</td>
<td>1.8723</td>
<td>0.0224</td>
<td>1093.59</td>
<td>1.704</td>
<td>0.0046</td>
<td>RC_6514_10.2_PI_126P</td>
<td>2019/06/15</td>
<td>14:30:35</td>
</tr>
<tr>
<th>8</th>
<td>5CCBDX0197M</td>
<td>5ACCD90004A6</td>
<td>9</td>
<td>-260</td>
<td>954</td>
<td>20</td>
<td>0.5</td>
<td>0.813240</td>
<td>550.0</td>
<td>1.8723</td>
<td>0.0224</td>
<td>1037.44</td>
<td>1.704</td>
<td>0.0046</td>
<td>RC_6514_10.2_PI_126P</td>
<td>2019/06/15</td>
<td>14:30:40</td>
</tr>
<tr>
<th>9</th>
<td>5CCBDX0197M</td>
<td>5ACCD90004A6</td>
<td>10</td>
<td>-430</td>
<td>954</td>
<td>20</td>
<td>0.5</td>
<td>0.860456</td>
<td>550.0</td>
<td>1.8723</td>
<td>0.0224</td>
<td>1057.37</td>
<td>1.704</td>
<td>0.0046</td>
<td>RC_6514_10.2_PI_126P</td>
<td>2019/06/15</td>
<td>14:30:45</td>
</tr>
</tbody>
</table>
</div>
```python
dataset.L2T.head(10)
y = dataset.L2T
print(y.head(10),dataset.L2T.head(10)) #普通数组也有head属性
```
0 1010.52
1 1008.73
2 1044.63
3 1069.88
4 1049.54
5 1042.95
6 1081.89
7 1093.59
8 1037.44
9 1057.37
Name: L2T, dtype: float64 0 1010.52
1 1008.73
2 1044.63
3 1069.88
4 1049.54
5 1042.95
6 1081.89
7 1093.59
8 1037.44
9 1057.37
Name: L2T, dtype: float64
#### pause
#### Closed